President Trump and first lady Melania Trump visited Puerto Rico, where they were briefed on the status of the relief effort and met with residents impacted by Hurricane Maria.
For centuries, scientists thought the human brain had no direct connection to the body's immune system. Now researchers seem to have found one, and say it may offer clues to multiple sclerosis, too.
Authorities say Stephen Paddock had at least 23 guns in his hotel room. Now, the FBI and the ATF are investigating whether — and how — he might have modified them.
Yahoo says the massive hack, previously said to have affected 1 billion accounts, in fact likely compromised 3 billion accounts. However, the company says corrective actions have already been taken.
NPR's Kelly McEvers talks with Rukmini Callimachi of The New York Times about why ISIS falsely claimed responsibility for the Las Vegas attacks. The FBI flatly rejected the claim.
For a week, black NFL players have been under an even brighter spotlight than on any given Sunday and while some families are turning away from the game, others are watching closely.
The sharp divides in the country over gun laws have been reflected in the largely binary responses from politicians from both major parties after the massacre in Las Vegas.
In Las Vegas, NPR's Mary Louise Kelly takes stock of the mood amid vigils to those who lost their lives on Sunday and tourists returning to the city as usual.